High-strength, ductility and corrosion-resistant in a novel Cu20Ni20Mn0.3Cr0.3Al alloy

Tang, Siyuan; Dai, Zixiang; Tan, Gongli; Gong, Shen; Liu, Bin; Xie, Guoliang; Peng, Lijun; Guo, Jiali; Zhou, Li

doi:10.1016/j.matchemphys.2020.123177

Cited by 12 publications

(9 citation statements)

References 38 publications

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“…Judging from the Nyquist diagram and Bode diagram, it is composed of two overlapping semicircles at 25 and 65 °C, that is, there are two time constants (τ ct and τ f ) (the double layer and the corrosion product layer). One is the Faraday process with intermediate frequency response, and the other is the corrosion product layer with high frequency response . When the temperature reaches 95 °C, it is mainly composed of two semicircles and a straight line of 45°.…”

Section: Resultsmentioning

confidence: 99%

“…One is the Faraday process with intermediate frequency response, and the other is the corrosion product layer with high frequency response. 26 When the temperature reaches 95 °C, it is mainly composed of two semicircles and a straight line of 45°. Due to the increase in temperature, the ion diffusion speed is accelerated, and the corrosion products are dense enough, which hinders the diffusion of the substance to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

“…The reason for choosing two models is that there are two capacitive loops or two capacitive loops and a straight line of 45°in the EIS diagram. 26 In the first model (Figure 10a), the relaxation times at middle frequency (MF) and high frequency (HF) can be associated with the double layer and the corrosion product layer, respectively. In the second model (Figure 10b), the relaxation times at low frequency (LF), MF, and HF can be associated with the double layer, the presence of corrosion products, and ion diffusion, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Corrosion Temperature on the Corrosion of Q235 Steel and 16Mn Steel in Sodium Aluminate Solutions

Quan

Chen

2021

ACS Omega

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This study investigates the effect of corrosion temperature on the corrosion of Q235 steel and 16Mn steel in the sodium aluminate solution using the weight loss method and electrochemical method. The results indicate that the corrosion rates of two steels show an increasing trend with the temperature and that of Q235 steel increases more than that of 16Mn steel at higher temperatures. The corrosion products have changed from four forms at 25 °C to two forms at 65 and 110 °C, namely, the octahedral particles and the bulk particles formed by the flocculent aggregation. The corrosion products are composed of FeS, FeS 2 , Fe 2 O 3 , Fe 3 O 4 , NaFeO 2 , and Al 2 O 3 . The I corr of the two steels increases with temperature, while R p gradually decreases. The two steels are controlled by the charge transfer at 25 and 65 °C and the charge transfer and the ion diffusion at 95 °C, indicating that the temperature changes the kinetics of the corrosion process.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Corrosion Temperature on the Corrosion of Q235 Steel and 16Mn Steel in Sodium Aluminate Solutions

Quan

Chen

2021

ACS Omega

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“…The physical models of Figure 9a,b are R s + Q f /(R f + Q dl /R ct ) and R s + Q f /(R f + Q dl / (R ct + Z w )), respectively. Some scholars have also proposed some similar models to analyze the corrosion products on the surface [14,38,39]. Based on the above analysis, the EIS fitting in Figure 8 was carried out by using the EEC in Figure 9 by means of the Zview software.…”

Section: Electrochemical Impedance Spectrummentioning

confidence: 99%

“…The electrochemical parameters are shown in Table 4. In the EEC, R s is the solution resistance, R f and Q f (CPE f ) are the corrosion layer resistance and capacitance, respectively, R ct and Q dl (CPE dl ) are the charge transfer resistance and dual-layer capacitance, respectively, and Z W represents the Warburg diffusion of ions [39]. The reason for Q for capacitors in the analysis of the impedance spectra is that the corrosion layer is not considered a homogeneous layer but rather a defective layer.…”

Section: Electrochemical Impedance Spectrummentioning

confidence: 99%

Effect of Corrosion Time on the Synergistic Corrosion of Q235 Steel in Sodium Aluminate Solutions

Quan

Chen

2021

Metals

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During Bayer alumina production with high-sulfur bauxite, the sulfide ions in the sodium aluminate solution caused serious corrosion to Q235 steel, which is the material of the tank equipment. This study investigates the effect of corrosion time on Q235 steel synergistic corrosion in sodium aluminate solution using the weight-loss method and electrochemical measurements. The results indicate that the corrosion rate decreases sharply, the rate equation satisfies the mathematical model of power function at the initial stage of corrosion, and the transformation of unstable iron sulfide to stable iron oxide at the later stage results in the decrease in sulfur content in the corrosion products and surface pseudo-passivation. There are two main types of corrosion products, as follows: one is the octahedral crystal particle, which is composed of Fe2O3, Fe3O4, Al2O3 and NaFeO2, and the other is the interlayer corrosion between the surface layer and the matrix, which is composed of FeS, FeS2 and MnS2. At day 3, the dynamics of the Q235 steel electrode is controlled by charge transfer and ion diffusion. However, at other times the dynamics are mainly controlled by charge transfer.

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Corrosion behavior of tin‐phosphor bronze strips in environments containing Cl⁻ and HCO₃⁻

ChengSheng

Wang

et al. 2022

Materials & Corrosion

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The corrosion behaviors of Cu-7.42Sn-0.156P and Cu-5.78Sn-0.162P alloys in different solutions were investigated. The results show that the Cu-Sn-P alloy with higher Sn content exhibits better corrosion resistance. In the NaCl, NaHCO 3 , and NaCl+NaHCO 3 solutions, compared with Cu-5.78Sn-0.162P alloy, the corrosion current densities of Cu-7.42Sn-0.156P alloy are reduced by 25.2%, 36.9%, and 34.5%, and the polarization resistances are increased by 32.0%, 25.4%, and 29.9%. The Cu-Sn-P alloys have the best corrosion resistance in the NaHCO 3 solution, followed by the NaCl solution and the worst in the NaCl + NaHCO 3 solution. The increase of Sn is helpful to improve the density and spalling resistance of the corrosion film. There is a double-layer structure for the corrosion film of Cu-Sn-P alloy. For the alloys immersed in the NaCl solution and the NaCl+NaHCO 3 solutions, the corrosion films consisted of Cu 2 O, CuO, and SnO 2 . For the alloys immersed in the NaHCO 3 solution, the corrosion films are composed of Cu 2 O, CuO, SnO, and SnO 2 . The increase of Sn content in the alloy can increase the contents of Cu 2 O and SnO in the corrosion films.

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High-strength, ductility and corrosion-resistant in a novel Cu20Ni20Mn0.3Cr0.3Al alloy

Cited by 12 publications

References 38 publications

Effect of Corrosion Temperature on the Corrosion of Q235 Steel and 16Mn Steel in Sodium Aluminate Solutions

Effect of Corrosion Temperature on the Corrosion of Q235 Steel and 16Mn Steel in Sodium Aluminate Solutions

Effect of Corrosion Time on the Synergistic Corrosion of Q235 Steel in Sodium Aluminate Solutions

Corrosion behavior of tin‐phosphor bronze strips in environments containing Cl⁻ and HCO₃⁻

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High-strength, ductility and corrosion-resistant in a novel Cu20Ni20Mn0.3Cr0.3Al alloy

Cited by 12 publications

References 38 publications

Effect of Corrosion Temperature on the Corrosion of Q235 Steel and 16Mn Steel in Sodium Aluminate Solutions

Effect of Corrosion Temperature on the Corrosion of Q235 Steel and 16Mn Steel in Sodium Aluminate Solutions

Effect of Corrosion Time on the Synergistic Corrosion of Q235 Steel in Sodium Aluminate Solutions

Corrosion behavior of tin‐phosphor bronze strips in environments containing Cl− and HCO3−

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Corrosion behavior of tin‐phosphor bronze strips in environments containing Cl⁻ and HCO₃⁻